It is a win for Cloudant. A huge win. They're a data company, not a biological warfare company. Their product will be used in an incredibly data-intensive application to do some really cool analysis. That's awesome for a data startup, and something to be proud of.
If I were a maker of a light-weight, high-strength alloy, should I be ashamed if Lockheed Martin wants to use it in their newest fighter jet? Of course not. I should be stoked that my product is getting such a high-profile endorsement, and excited about what it means for future development.
This announcement lends huge credibility to BigCouch, and will likely lead to future deals. They'd be idiots and incredibly poor businessmen if they didn't announce it with some fanfare.